Decorative comb



FIG. 1 is a front right perspective view of a decorative comb showing our new design;

FIG. 2 is a rear right perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof; and,

FIG.7 is a right side view thereof. 

The ornamental design for a decorative comb, as shown. 